How are ice crack ceramics made?

According to historical records, Longquan has a purple mouth and iron feet, and the glaze is cracked into lines. The lines have different shapes, such as ice cracks, crab claw lines, garbage, caviar lines and assembly lines. Ice crack ranks first among all Gean patterns, and is known as "Gean character, and ice crack is the best pattern". Its stripes are like ice, its cracks are deep and thick, and some are like fish scales, which are layered on top of each other, also called "fish scales". "The production technology of ice cracks has been lost since the Song Dynasty, and the number handed down is very limited, and it is not recorded in historical materials. 1996, a Japanese businessman sent a fax photo of ancient ice cracks to Longquan ceramic arts and crafts artist Xiaochun Ye who knew the formula of celadon glaze, hoping that he could "regenerate" the best ice cracks in ancient Colombia. Xiaochun Ye, who was born in a celadon family, learned the techniques of digging, drawing blank, making fetal glaze and firing at an early age. Facing the photos sent by Japanese businessmen, Xiaochun Ye was deeply attracted by this unique crack he had never seen before. For this reason, Xiaochun Ye traveled all over Longquan ancient ruins, looking for the fragments of ice cracks left over from ancient times, and tried out hundreds of formulas, which were easy to draft thousands of times, but the finished products fired once did not show any traces of ice cracks. The trial-produced formula failed again and again. Xiaochun Ye once wavered and thought about giving up. It was not until 2000 that he was suddenly inspired by the surface texture of plastic foam board and thought that the imaginary ice crack should be this pattern. So he tried again and again. In the second half of the year, a small number of three-dimensional layered cracks finally appeared on the fired tiles, and the experiment was initially successful. Xiaochun Ye immediately determined the formula of glaze water, and then continuously adjusted and studied the control of the temperature change of the slicing furnace. After hundreds of repeated experiments, the glaze layer is superimposed like a fish-scale crack, thus forming a stereoscopic visual effect as thick as a pile of fat. Lost for nearly a thousand years, Kehou ice cracking skill was finally reborn in Longquan, the hometown of celadon. Since the successful recovery of ice cracking technology, many porcelain lovers have come to buy products, and even offered to pay first and then pick up the goods, but Xiaochun Ye did not dare to promise. Xiaochun Ye told reporters that ice crack technology is very sensitive to porcelain clay and temperature, and it is very difficult, so the yield is very low. According to the calculation of burning ten pits a month, it is not surprising that the finished product cannot be found in three months. After Ye's brother restored the ice cracking technology, he and his younger brother devoted themselves to technological innovation again, and made the moon in the water by combining their technologies perfectly, and put the two glazes in the same pot. In addition, the second brother Ye Xiaojun also created "celadon underglaze color". My younger brother Ye Wei is good at making jade and other works, while my third brother Ye Xiaowei is good at modeling works. Modern Longquan celadon has reached a high artistic level in decoration, modeling, technology and glaze color. As a highlight of this exhibition, the ice crack works are Xiaochun Ye's patent works. Now, Ye's Longquan Brothers Ice Cracking Series and Brothers' Works have become the collection objects of collectors at home and abroad. Among the 65,438+000 pieces of celadon exhibited by Brother Ye, some of them won prizes in provincial or national ceramic competitions and China Arts and Crafts Masters Fair.